add asserts to contactcreationtests
add asserts to contactremovaltests
add asserts to contactmodificationtests
add random generated data to contactcreationtests and change toString method
add random contact deletion
add random modification to contactmodificationtests
add getters and setters and change methods with .with
modify all group tests
change fillContactForm method(add second parameter - formType)
rename methods
add high level method createGroup()
add high level method modifyGroup() and deleteGroup()
add auto switching about pages
change getGroups method
add auto srting methods
change asserts to hamcrest style
done the same as with groups